William J.L. Sladen

Bill Sladen

William Joseph Lambart Sladen MBE (19 December 1920 - 29 May 2017) was a Welsh naturalist who was a specialist in bird life. He was professor emeritus at Johns Hopkins University in the United States. He researched the mating of Antarctic birds and received the Polar Medal. Two mountains on the continent, Mount Sladen and Sladen Summit, are named in his honour. His discovery in the 1960s that DDT residues could be found in adelie penguins contributed to the banning of DDT in the U.S.^{[1][2][3][4][5][6][7]}

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